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Fair Value Measurements (Tables) | 9 Months Ended
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Oct. 31, 2025
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis | The following table summarizes our financial assets that are measured at fair value on a recurring basis:
| October 31, 2025
(in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Level 1: |  |  |  |  |  |  |
Cash equivalents(1) |  |  |  |  |  |  |
Money market funds | $ | 258,197 |  |  | $ | — |  |  | $ | — |  |  | $ | 258,197 |
Level 2: |  |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |  |
Commercial paper | 32,777 |  |  | 7 |  |  | (6) |  |  | 32,778 |
Corporate notes and bonds | 410,241 |  |  | 730 |  |  | (126) |  |  | 410,845 |
U.S. governmental securities | 21,498 |  |  | 2 |  |  | (14) |  |  | 21,486 |
Level 2 total | 464,516 |  |  | 739 |  |  | (146) |  |  | 465,109 |
Total | $ | 722,713 |  |  | $ | 739 |  |  | $ | (146) |  |  | $ | 723,306 |
| January 31, 2025
(in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Level 1: |  |  |  |  |  |  |
Cash equivalents(1) |  |  |  |  |  |  |
Money market funds | $ | 183,885 |  |  | $ | — |  |  | $ | — |  |  | $ | 183,885 |
Level 2: |  |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |  |
Commercial paper | 31,367 |  |  | 12 |  |  | (8) |  |  | 31,371 |
Corporate notes and bonds | 399,034 |  |  | 522 |  |  | (378) |  |  | 399,178 |
U.S. governmental securities | 18,500 |  |  | 1 |  |  | (21) |  |  | 18,480 |
Level 2 total | 448,901 |  |  | 535 |  |  | (407) |  |  | 449,029 |
Total | $ | 632,786 |  |  | $ | 535 |  |  | $ | (407) |  |  | $ | 632,914 |
(1) Included in “cash and cash equivalents” in our consolidated balance sheets as of October 31, 2025 and January 31, 2025, in addition to cash of $325.1 million and $464.7 million.
Schedule of Fair Value of Available-for-sale Marketable Securities by Remaining Contractual Maturities | The fair values of our available-for-sale securities as of October 31, 2025, by remaining contractual maturities, were as follows (in thousands):
Due in one year or less | $ | 256,580 |
Due in one to two years | 208,529 |
| $ | 465,109 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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